Air valve for inflating hollow bodies



S. SAUL AIR VALVE FOR INFLATING HOLLOW BODIES -May 13, 1930.

Filed Dec 14, 1928 A Illlllllllll-'llllllllll Patented May 13, 1930 i l1,758,625

UNITED STATES- PATENT 'orf-lcs SIEGFRIED SAUL, AACHEN, GERMANY A1B VALVEFOR INFLATIGTHOLLOW BODIES` Application led December 14, 1928, SerialNo. 326,087, and in Germany October 20, 1928.

This invention relates to an air valve for of the valve case andeventually through the inilating hollow bodies speciallyv bladders foropenings` ofthe valve body into said hollow foot balls. The air valve,according to the inbody. vention, is distinguished from air valves of Assoon as the charging is interrupted, known type by its simpleconstruction and by the top end of the valve body bears autoinati- 55-its absolutely reliable effect. cally against the valveseat and shutsolf the The invention consists essentially in that same tightly. Bytheincreasing air pressure a hood-shaped element of vconvenient matethevalve body is more strongly pressed rial serving as valve case, theenvelope and against the valve seat, and the packing of eventually alsothe bottom of said element this valve seat is increased accordingly. 60having one or more openings, extends with It the compressed air has tobe discharged its bottom and envelope to underneath the from' the hollowbody, the valve body is charging hole of the hollow body into thisslightly pushed backby means of a rod inhollow body, the flange at theupper end of serted through the charging opening of the l5 the valvecase being tightly fixed on the holhollow body and through the centralboring 65 low body, a ring of hard rubber or other suitof the valveseat, so that the compressed air in lable material serving as valve fseat beingV the hollow body can escape into the atmostightly fitted insaid valve ease and eventualplrere between the valve body and the valvely also lixed on said hollow body, and a hoodseat. ln order to preventthe rod slipping beshaped element of soft rubber serving as tween valveseat and valve body, an indentavalve body and having also openings inits 'tion is preferably arranged in the packing envelope, the outerdiameter ci said valve surface of the valve body, designed to `rebodybeing smaller than the inner diameter ceive the accordingly shaped endoi the rod of the ...alve ease and said valve body, being used to openthe valve.v slightly higher than the distance between the )in embodimentof the invention consist- A valve seat and the bottoni of the valvecase, ing or an air valve for iniating the bladder of resting tightlywith its rim on the bottom of a 'l'oot ball, is illustrated by way ofexample the valve case so that its top vend presses in the accompanyingdrawing in which rn strongly against the valve seat and automati- Fig. 1shows the air valve in longitudinal cally packs the same. section in theclosing position. 50 As the packing faces ofthe valve body and Fig. 2 isa similar view as Fig. l, showing ofthe valve seat may be comparativelylarge, the air valve in the open position. a very effective packing isobtained in the The valve mounted on the'bladder l of the valveaccording to the invention. The packfoot-ball consists of a hood-shapedvalve case ing faces of the valve body and of the valve 2 made of softrubber, of a ring-shaped valve 55 seat may be plane, curved, conical orof any seat 3 of `hard rubber aluminium or other other suitable form.suitable material, and of a valve body 4 which The material for thevalve case is selected is also hood-shaped and made of soft rubber.according to. the object for which the valvev In the envelope ofthevalve case 2 passages 5 40 is designed. The valve case might be made andin the bottom plate a central 'opening 5et 90 for instance of aluminiumor of any other are arranged. The valve case 2 is fixed unmetal.' Theopenings in the envelope of the der the charging opening 6 vof thebladder 1 valve body and in the bottom of the valve and extends intosaid bladder, the flange 2a case might be omitted if desired'. of thetop end of the valve case 2 being stuck l At `the lling of the hollowbody with cdmby means of a rubber solution on the football 95 pressedair the valve/body. is slightly combladder. The valve seat 3, the outerdiampressed' by this compressed air so that its top eter of which isslightly greater than the moves away from the valve seat, and cominnerdiameter of the valve case 2, is inserted pressed air can flow throughbetween the valve in the open to end of the valve case 2 so seat and thevalve body through the openings that the wall o said valve case is putunder 10 tensionand tightly pressed around the valve seat 3. Theoutwardly directed end face of the valve seat 3 is stuck on the lowersurface of a ring-shaped rubber plate 7 which is glued together with theflange 2a of the valve case and with the bladder 1 of the foot ball.

f The outer diameter of the valve case 4 is somewhat smaller than theinner diameter-of the valve case 2 and the valve body is slightly higherthan the distance between the upper surface of the bottom of the valvecase and the lower surface of the valve seat 3. In the wall of the valvebody 4 four openings S arearranged. The valve body 4 is insertedconcentric to the valve case 2 into said valve case so that its rimbearson the bottom of the valve case. l Owing to its height the closedtop end of the valve-body 4 is strongly pressed against the valve seat 3and packs the same. Under the central opening of the valve seat 3apointed indentation 9 is arranged in the top face of the valve body anddesigned to receive the pointed end of a rod 10 (Fig. 2).

At the inflating of the bladder 1 of a football the compressed air lowsin through the charging hole 6, slightly compresses the valve body 4 sothat its closed top end is moved i. away from the valve seat 3, and thecompressedair can How through between the valve seat 3 and the valvebody 4 into the an-,

nular space between said valve body and the lvalve case 2, through theopenings 5 of the valve and 'the openings 8 of the valve body and thecentral openings 5a of the bottom of the valve case into the bladder.

As soon as the'forcing in of compressed air is interrupted, the valvebody 4 tightly Closes again the valve seat 3.

If the compressed air has to be discharged from the bladder 1, a rod 10is inserted through the charging hole 6 of the bladder 1 and through thecentral opening of the valve 4seat 3 into the cavity 9 of the valve-body4 (Fig. 2) so that the valve body is somewhat compressed and moved awayfrom the valve seat. and the compressed air can flow out of the footballbladder 1 in the opposite direction to that by which it has entered.

' eially football bladders, comprising inv com-- bination the bladderhaving a charging hole,

hardmaterial as hard rubber tightly fitted into the open upper end ofsaid valve case, and a hood-shaped valve body of soft rubber havingholes in its wall its outer diameter being smaller than the innerdiameter of said valve case and its normal height being somewhat greaterthan the distance between the lower surface ofpsaid valve seat and theupper surface of the bottom of said valve case the rim at the open endof said valve body resting on the bottom of said valve `case and vitsclosed top end bearing from below against said valve seat tightlysealing the same. -v

2. An air valve as specified in claim 1, wherein said valve body has atthe centre of its closed top end a cavity adapted to receive a rodinserted through said charging hole of said bladder and through thecentral hole of said valve seat for pushing said valve body away fromsaid valve seat.V

3. An air valve4 as specified in claim 1, said valve case having acentral opening. in its bottom plate the inner diameter of said openingbeing smaller than the inner diameter of s aid valve body.

In testimony whereof I aflx my signature.

SIEGFRIED SAUL.

a hood-shaped valve case of suitable material having several passages inthe envelope and a central passafre in the bottom plate inserted so thatit extends into saidbladder, a flange at the upper end of said valvecase stuck on said bladder, a vring-shaped valve seat of through saidciarging hole of said bladder

